ES1069400U - Lamp and lighting system and device - Google Patents

Abstract

Illumination device (1), comprising a first and a second section of tube (2, 2'') conducting natural light, characterized in that a LED lamp (4) (6) is attached to one of the sections. of high power, provided with a plurality of LEDs arranged adjacent to the inner face of said section of tube and distributed at least partially along the contour of its internal cross section. (Machine-translation by Google Translate, not legally binding)

Description

Lighting device.

Technical sector of the invention

The invention relates to a device of lighting comprising a conductive tube of natural light for the interior lighting such as homes or offices.

Background of the invention

For interior lighting of homes, offices and the like it is known to use light conductive tubes natural, which allow to capture sunlight through a skylight and its conduction through the interior of the tubes, lined with a highly reflective material for this purpose, to be delivered in different interior lighting points. In this way it is possible to illuminate interior rooms using sunlight, with the consequent energy saving, since the Light generation using electric current. Since the sun changes position throughout the day, the skylight catching light can be adapted through its orientation and placement of optical lenses to optimize the capture of sunlight between the Dawn and twilight. In this way the lighting of interior rooms during the hours when there is sun. Do not However, the lighting level may not be constant, due to the passing clouds or the day is not sunny enough, and therefore the amount of light captured may become insufficient for the lighting of the interior rooms. Similarly, it is not possible lighting of interior rooms during the night. To solve this problem, it has been suggested to introduce lighting elements in the light collection tube, so that in situations of insufficient lighting due to the sunlight collected, this lack of light can be replaced by the use of lights incandescent such as light bulbs or fluorescent. However, the Use of this type of bulbs results in low efficiency of use energy, because most of the energy dissipates in the form of hot. Another drawback of this type of light bulbs is the space they occupy within the conductive tube of natural light, preventing the passage of sunlight and therefore reducing the lighting level of the interior rooms during the hours of sun, in which it is not necessary to use artificial means of illumination. In addition, the life time of the light bulbs previously cited is limited, so when they merge into end of its useful life must be replaced with the consequent cost. As this type of lamps is normally installed on ceilings and protected by glass or diffuser lenses, the Bulb changing operation is also difficult.

The use of diodes electro-luminescent (leds) of high power for lighting is also known, since it has advantages in in terms of its energy efficiency and in terms of its consumption, which It is noticeably lower than the known light bulbs, in addition to have a much longer lifespan, to the point that it is not replacement is necessary during the life of the lamp. Do not However, high power LEDs are highly sensitive to overheating and require work at relatively temperatures low. If you work at a temperature that is too high, your shelf life decreases dramatically, being able to reach melt immediately in high temperature situations. This cause that its use inside natural light tubes is not possible because the natural light tubes, to maintain a good insulation between inside and outside, are sealed and They do not allow air exchange. Therefore, the level of heat dissipation may not be enough for good operation of the leds.

The fact that the LEDs work at correct temperature is essential to ensure its correct operation and prevent melting, since the LEDs are high power are usually welded to the lamp and is practically its replacement impossible, having to be replaced all of the lamp or require the intervention of a technical service specialized.

Explanation of the invention.

The lighting device according to the invention It is particularly applicable to illuminate interior rooms by natural light

The device comprises a first and a second section of natural light conductive tube and in essence it is characterized because a high LED lamp is attached inside power, provided with a plurality of adjacent arranged LEDs to the inner face of said tube section and distributed at least partially along the contour of its cross section internal

A variant of interest of the lamp is characterized in that the lamp comprises a support body of the LEDs, annular or polygonal, according to the contour of the internal cross section of at least one of the tube sections, on which the LEDs are mounted.

In another variant of the invention, the LEDs are regularly distributed throughout the entire body of LED support.

According to another variant of interest, the device lighting comprises at least one adapted controller element to modify the power supply of the LEDs.

In a variant, the lighting device It is characterized in that the control elements are operable by a signal generated by a transducer element, being able to be this manually operated transducer element or automatic.

In a variant of interest, the element Transducer is a light intensity sensor.

In another variant of interest, the element Transducer is a temperature sensor.

According to a preferred embodiment of the invention, The signal generated by the transducer element is transmitted to through a communication channel, through the intervention of at minus one emitting element and a corresponding element receiver.

According to another feature of the invention, the LEDs have a power greater than 3 watts.

In another variant of interest, the device lighting comprises a dissipation plate, applied on the outer face of at least one of the tube sections, located at Lamp level

In a preferred variant, at least one of the dissipation plate edges are scalloped.

In a variant of interest, the first and second tube section are attached without continuity solution and the lamp It is mounted inside any one of the mentioned sections of tube while in another variant of the invention the first and second tube section are formed by respective segments of tube between which the lamp is arranged, which joins them by way of flange.

Brief description of the drawings

The attached drawings illustrate, by way of non-limiting example, a variant embodiment of the invention. In these drawings:

Fig. 1 represents a sectional view of a lighting device according to the invention;

Fig. 2 represents a plan view of a cross section of a lighting device according to the invention;

Fig. 3 represents a plan view of a cross section according to another variant of the device according to the invention;

Fig. 4 represents a plan view of a cross section of a lighting device according to the invention, which incorporates a dissipation plate;

Fig. 5, represents a perspective view enlarged device incorporating a dissipation plate; Y

Fig. 6 represents a scheme of the system electronic control of light power in an installation provided with the device according to the invention.

Detailed description of the drawings

In view of the figures it can be seen that the lighting device 1 object of the invention comprises a lamp 4 containing a plurality of high power LEDs 6, In addition to electronic control elements 7 for ignition and protection against possible overheating situations that could damage the LEDs 6.

Fig. 1 shows a sectional view of a lighting device 1 according to the invention comprising a section of tube 2 upper light conductor that captures sunlight to through a skylight 3, comprising a lamp 4 of leds 6 of high power and a section of 2 'lower tube. The pipe section 2 light conductor can also be composed of different sub-sections and ramifications, as is known in the state of the technique, so that its path can be adapted as necessary. LED lamp 4 6 is mounted between the sections of tube 2 and 2 'light conductor so as not to impede the passage of light solar from the skylight 3. The fact that the device of lighting 1 incorporate a lamp 4 of leds 6 allows to illuminate an interior room not only by sunlight, but also in situations of partial or total darkness such as evil weather, cloudy weather or even at night. In this way, the lighting device 1 can replace the lack of sunlight with the artificial light produced by the lamp 4 of leds 6.

The lighting device 1 also allows, advantageously and automatically, to replace a partial lack of light, through the use of transducer elements 10 sensitive to the level of luminosity that allow to regulate the lighting power of the leds 6 so that the lighting level of the room Indoor be constant regardless of the level of sunlight. To maintain a constant level of lighting in the room inside, the transducer element 10 captures the level of illumination of the room and acts on the emitting element 11, which transmits to the receiver element 12 via the communication channel 13 a signal so that the receiving element 12 acts on the element controller 7 of lamp 4 to set the level of desired lighting of the leds 6, so that it is possible to replace the lack of natural light, maintaining constant illumination of the interior stay

Said support body 5 is fixed to the section of light conductor tube 2 by known support means, such as screws, staples or rivets. To improve the efficiency of the light conduction in the section that goes from lamp 4 to the inner room, another section of tube 2 'of the same type is placed than the one that makes up the tube section 2. The end of the section of 2 'tube is also sealed and provided with a protective glass 8 to protect lamp 4 of leds 6 and prevent entry and exit of air, which would affect the insulation of the room. This crystal 8 protector can also comprise optical means to allow the diffusion and addressing of the light beam, such as lenses fresnel Naturally, other protective means of those known in The prior art can also be used instead of glass 8 to protect the lamp 4.

The support body 5 of the lamp 4 is of general annular or polygonal shape and the 6 high power LEDs are preferably found uniformly distributed throughout the length of the support body 5, so that not only get a better distribution of the light beam generated by the LEDs 6, but the heat generated by the LEDs is better distributed 6 without creating heat sources that could damage the LEDs 6 nearby.

Lamp 4 of LED 6 dissipates the heat generated by LEDs 6 through tube section 2 and tube section 2 ', preferably made of aluminum or other conductive material, so that they can act as a heat sink. The air inside the tube sections 2, 2 'also acts as a medium heat sink, although being sealed for reasons of thermal insulation between the interior and exterior room, the heat generated by lamp 4 is mostly dissipated through the body of the tube sections 2, 2 '. To improve the thermal dissipation, the lamp 4 comprises a plate of dissipation 9, attached to the support body 5 and applied around the outer face of the tube sections 2, 2 'light conductor and located at the level of the lamp 4 so that it is possible to improve the heat dissipation generated by the lamp 4. In addition, in case of that the dissipation means cannot maintain a temperature of adequate work, and to avoid overheating of the leds 6 of the lamp 4, the lighting device 1 is advantageously provided with control elements 7 which allow to regulate the light intensity of the LEDs 6. In the example of Fig. 1, the control elements 7 are mounted in the same support body 5 of the leds 6. Naturally, the invention also contemplates the possibility that the elements controllers 7 are located outside lamp 4, being also connected to leds 6.

Because the higher the power light emitted by leds 6, the greater the heat generated by the LED 6, lamp 4 incorporates temperature sensors that monitor the working temperature of the leds 6, acting on the control elements 7 in case of exceeding the temperature Safety LED 6 to temporarily limit the power light and favor the temperature decrease of the set until a safe temperature level is restored for the operation of leds 6. leds 6 feed preferably by a square pulse train with a cycle of variable work, at a sufficiently high frequency so that you can vary the efficient light output emitted by the LEDs 6, without said pulses being perceptible to the human eye, so that when the controlling element 7 increases the duty cycle of the  Pulse train an increase in light output is perceived generated by leds 6 and, when the controller element 7 decrease the duty cycle of the square pulse train, perceive a decrease in the light power generated by the LEDs 6. Therefore, when the temperature sensors, which can be integrated with controller elements 7 by way of integrated circuit, detect that the temperature of the lamp 4 exceeds the safety temperature for the proper functioning of leds 6, act on the controller to decrease temporarily the work cycle of the pulse train and, for consequently, the light power of the leds 6 avoiding the lamp overheating 4. This can happen when the dissipation plate 9 fails to dissipate enough heat to Maintain the working temperature of LEDs 6 of lamp 4 below the safety threshold for the proper functioning of the leds 6.

As can be seen in Figs. 2 and 3, the leds 6 are distributed throughout the body length of lamp holder 5 4, to achieve good lighting of the interior room in situations where the sunlight comes of skylight 3 is not enough. In addition, lamp 4 is adapted to fit with adjustment on the inner face of the section of tube 2 conductor of light, being able to be this one of circular section, like in Fig. 2, or square, as in Fig. 3. In case, irregularities in the shape of the sections of tube 2, 2 ', the lamp 4 will not be fully fitted with adjustment or to increase the heat dissipation efficiency, it is possible to use adhesives high thermal conductivity of those known in the state of the technique to optimize the contact between the support body 5 and the sections of tube 2, 2 '. Other geometries of the pipe sections 2, 2 'natural light conductor are also possible depending on the type of installation, and therefore lamp 4 would have to be adapted to the contour of the inner face of the tube 2 light conductor so fit with fit and optimize the heat transmission generated by the lamp 4 to the tube sections 2, 2 'light conductor natural.

Fig 4 shows a section view section of the lighting device 1 of Fig. 1, in the which can be seen as the LEDs 6 of the lamp 4 remain located inside the tube sections 2, 2 'light conductor natural that also incorporates a dissipation plate 9 that adapts to the outer face of the pipe sections 2, 2 '. In this way the heat dissipation generated by the lamp is improved 4 and it is favored that the leds 6 work at a temperature by below the safety threshold without requiring action on 7 controlling elements to limit the lighting power of the LEDs 6. The dissipation plate 9 may have different ways to improve the level of dissipation. For example, the dissipation plate 9 of Figs. 4 and 5 present at its edge top a scalloped as multiple fins 17, equal and in cantilever directed outward, equidistant from each other and that they favor thermal exchange and therefore the dissipation of heat generated by the LEDs 6 of the lamp 4. Similarly to the lamp 4, the dissipation plate 9 has to adapt to the different geometries that the external face of the 2, 2 'tube sections. Therefore, although Figs. 4 and 5 show a dissipation plate 9 adapted to pipe sections 2, 2 'of circular section, other geometries are also possible. The plate of dissipation 9 is installed between the sections of tube 2, 2 'to it level than lamp 4, so that the dissipation of the heat generated by the LEDs 6 of the lamp 4.

So that the user can modify the levels of brightness of the interior room, there is a system of control like the one shown in Fig. 6. The desired level of luminosity is configured through the information collected by the transducer elements 10, which can be manual such as switches, potentiometers or remote controls, or automatic such as ambient or presence light sensors and is transmitted by the sending elements 11 to the receiving elements 12 through a communication channel 13.

The emitting elements 11 and receivers 12 are designed so that they can communicate using a protocol preset through communication channel 13, as per example the digital protocol EIA-485.

It is also possible to transmit the desired level of luminosity by means of remote elements 16 that integrate transducers 10 and emitters 11, such as computers or telephones, using as a communication network 15, networks such as the network switched telephone or an IP network (LAN, Internet ...). The information collected and sent by remote elements 16 is received and processed by adapter elements 14, which convert the incoming signal in a signal that can be interpreted by receiving elements 12 and injecting said signal into the channel of communication 13.

Using the control system described, the brightness level of lamps 4 can be selected from local or remote way. The receiving elements 12 decode the received signal and act on the control elements 7 establishing, according to the received data, the brightness level of the leds 6.

Naturally, the control system of lighting devices 1 also includes inclusion and adaptation of home automation systems of the commonly known and used by experts in the field.

Claims (15)

1. Lighting device (1), comprising a first and a second section of natural light conductive tube (2, 2 '), characterized in that in one of the sections a LED lamp (4) is connected (6) of high power, provided with a plurality of LEDs arranged adjacent to the inner face of said tube section and distributed at least partially along the contour of its cross section
internal 2. Lighting device (1) according to claim 1, characterized in that the lamp (4) comprises a support body (5) of the LEDs (6), annular or polygonal, according to the contour of the internal cross-section of at least one of the tube sections (2, 2 '), on which the LEDs are mounted. 3. Lighting device (1) according to claim 2, characterized in that the LEDs (6) are regularly distributed throughout the entire support body (5) of the LEDs. 4. Lighting device (1) according to any one of the preceding claims, characterized in that it comprises at least one controller element (7) adapted to modify the LED feed current. 5. Lighting device (1) according to claim 4, characterized in that the control elements (7) are operable by a signal generated by a transducer element (10). 6. Lighting device (1) according to claim 5, characterized in that the transducer element (10) is manually operated. 7. Lighting device (1) according to claim 5, characterized in that the transducer element (10) is automatically operated. 8. Lighting device (1) according to claim 7, characterized in that the transducer element (10) is a light intensity sensor. 9. Lighting device (1) according to claim 7, characterized in that the transducer element (10) is a temperature sensor. A lighting device (1) according to any one of claims 5 to 9, characterized in that the signal generated by the transducer element (10) is transmitted through a communication channel (13), by means of the intervention of at least one emitting element (11) and a corresponding receiving element (12). 11. Lighting device (1) according to any one of the preceding claims, characterized in that the LEDs (6) have a power greater than 3 watts. 12. Lighting device (1) according to any one of the preceding claims, characterized in that the lamp (4) comprises a dissipation plate (9), applied on the external face of at least one of the tube sections (2, 2 '), located at the level of the lamp (4). 13. Lighting device (1) according to claim 12, characterized in that at least one of the edges of the dissipation plate (9) is scalloped. 14. Lighting device (1) according to any one of the preceding claims, characterized in that the first and second section of tube (2, 2 ') are connected without continuity solution and because the lamp (4) is mounted inside any one of the mentioned sections of tube. 15. Lighting device (1) according to any one of claims 1 to 13 characterized in that the first and second section of tube (2, 2 ') are formed by respective tube segments between which the lamp (4) is arranged, which unites them as a flange.